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Unformatted text preview: (a) The ratio of mass flow rate through the power loop to that through the refrigeration loop. (b) Q L Q IN Page 1 of 1 Problem 2: A small heat pump unit is used to heat water from a hot-water supply. Assume that the unit uses ammonia and operates on the Carnot refrigeration cycle. The evaporator temperature is 15 o C and the condenser temperature is 50 o C. If the amount of hot water needed is 0.1 kg/s, then: (a) Draw the ammonia cycle in a T-s diagram. (b) Determine the amount of energy saved by using the heat pump instead of directly heating the water from 15 o C to 50 o C. (c) Find the mass flow rate in the ammonia cycle. Page 2 of 2...
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- Fall '02